You can generate a new evaluation license to continue with your evaluation of Confluence by following the instructions below:
- Login to your My Atlassian account. Your username is your email address.
- Click on New Evaluation License in the top right of the screen.
- Select Confluence from the drop-down menu
- Enter your Server ID
- Click on Generate License
This will then display a new evaluation license. You can then follow the instructions for installing the new key.